Type-writing machine.



J. W. KOERNBR.

TYPE WRITING MACHINE.

APPLICATION HLnn Barr. 1, 100a.

Patented Dec. 19, 1911.

2 SHEETS-SHEET 1,

WITNESSES. |NVENTDR= M W mDRNEY cuumllA mmxmmm muvmlmun'l'on. n, c,

J. W. KOBRNER.

TYPE WRITING MACHINE.

nruonron FILED saw. 1, 1909.

Patented Dec. 19, 1911.

INVENTEJFE. M i;

HIEATTEIRNEY :OLuMBu PLANOORAFH cm, WASHINGTON. u, :4

UNITED STA S PATENT OFFICE.

JOHN W. KOERNER, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE MONARCH TYPE-WRITER COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed September 1, 1909.

Patented Dec. 19, 1911.

Serial No. 515,642.

To all whom "it may concern Be it known that I, JOHN W. Konimnn, citizenof the United States, and resident of Syracuse, in the county ofOnondaga and State of New York, have invented certain new and usefulImprovements in Type \Vriting Machines, of which the following is aspecification.

My invention relates to typewriting machines and more particularly totype rests for such machines.

One of the important objects of my invention is to provide a simple andefficient type rest adapted by its construction so to react on the typebars when they strike against the type rest, as to prevent rebound ofthe type bars from the rest, or to reduce the rebound to such an extentthat there will be no conflict near the type rest between adjacent barswhen they are rapidly operated in succession.

Another important object is to obviate or reduce the common tendency ofsome type bars to jump from the rest when others are operated.

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, arrangements of parts andcombinations of devices to be hereinafter described and particularlypointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicatecorresponding parts in the various views, Figure 1 is a fragmentaryvertical front to rear sectional view of a Monarch machine embodying myinvention, a sufiicient number of parts only of the machine being shownto illustrate my invention. Fig. 2 is a. detail front elevation showingthe type rest and some of the series of type bars which are supportedthereby; some of the bars being diagrammatically illustrated. Fig. 3 isa detail fragmentary plan view of the type rest, the type bars beingomitted. Fig. 4 is an enlarged detail fragmentar transverse sectionalview taken through t e type rest at one of the ribs thereon. Fig. 5 is adetail side elevation of the type rest and one of its supporting rods.

It has been customary heretofore to employ in the construction of typerests lead or other non-resilient material which will deaden the blowand thus reduce the rebound. It has also been proposed to effect arelative displacement between the parts of the type rest in such amanner that the displaced part cannot spring back to its normal positionafter the blow is struck; and thus to deaden the blow and reduce therebound. My invention is quite different from either class of structuresreferred to above for I employ a resilient instead of a nonresilientsupport or type rest and yet the shock of the blows of the type bars onthe rest will be largely absorbed and there will be little or no reboundfrom the rest, the reaction of the rest being so controlled that theforce of the reaction will be imparted gently to the striking bar orbars.

The frame of the machine comprises a base 1, corner posts 2 and a topplate 3. The top plate is surmounted by a carria e (not shown) whichtravels from side to side of the machine and carries a cylindricalplaten 4 diagrammatically shown in Fig. 1. Key levers 5 are fulerumedagainst a fulcrum plate 6 carried by the base of the machine, and eachkey lever has pivoted thereto at 7 a sub-lever 8. The lower end of eachsub-lever is slotted at 9 to receive a fulcrum bar 10 which extendstransversely beneath the key levers and is secured at its ends to theframe of the machine. The upper end of each sub-lever 8 is connected toa link 11 pivoted at its forward end to a type bar 12. The type bars areeach pivoted at 13 to a type bar hanger 14 secured to a type bar segment15 by a screw 16. The series of segmentally arranged type bars are eachadapted to move upwardly and rearwardly and to strike against the frontface of the platen 4. Extending forwardly from the type bar segment aresupporting rods 17.

The parts thus far described are of the usual construction embodied inthe Monarch machine, it being understood that in this machine the typebar segment 15 is given a vertical shifting movement to change the caseposition of the type bars so as to cause either the upper or lower casetypes 18 to strike the platen at the printing point. The forward ends ofthe supporting rods 17 have a vertically disposed plate-like bracket orsup ort 19 secured thereto by screws 20. The p ate 19 extends outwardlyat its ends beyond the rods 17 and forwardly extending shouldered.headed screws or pins 21 are secured to and roject from the support 19.The barrel or shank of each of these screws or pins 21 is received in aslot 22 formed by a looped portion 22" of a type bar rest or supportmade preferably from a flat strip of resilient metal. These loopedportions 22 which form the slots 22 are formed by bonding the ends ofarms 23 which project from the curved portion 24 of the support. Thepart 24 is curved to conform, when the parts are in the normal positionsshown in Fig. 2, substantially to the segmental arran ement of theseries of type bars 12 and is formed with two longitudinally extendingribs 24 for purposes which will hereinafter appear.

The upwardly opening curved portion 21 of the supporting member orspring is sheathed or faced with a pad 25 which is fixed thereto by anysuitable means, the means shown in the present instance being a seriesof rivets or tacks 26, the points of which are received through openingsin the portion 24 of the resilient support and pass through the pad 25,the tacks being turned at their ends as at 27 to connect the pad to itssupport. The pad may be of any suitable liant material such as felt,leather or the like. The member 22"-23-24 is referably formed of asingle piece throug out its length and is resilient throughout itslength although it is immaterial whether or not it be formed of onepiece so long as all of the parts are united to form virtually onemember. Before the supporting member 222324 is placed in position on itsfixed supporting pins 21 the member is bent to the form which is shownin Fig. 2 and which may be called its natural form. The pins 21 are thenthreaded into place in the fixed support to maintain the resilientsuport in position as shown in Fig. 2 and the inherent resiliency of thelatter support will tend to restore it to the shape and position shownin this figure if its shape and position are changed by the impact of atype bar against it. The resilient support is normally maintained in theelevated position shown in Fig. 2, the lower or outer ends of the slots22 then being in contact with the pins 21. A blow imparted by a type barto the pad will tend to flex the resilient support between the ribs 2/1and at or near the arms 23 of the support, and will cause a slightangular movement of either or both of the arms on the pins 21. Theaction of the rest depends somewhat on the character of the returnstroke of the ty e bar and the point where the impact of t e type bar isreceived against the support. If, for instance, the left-hand type barshown in Fig. 2 strikes the pad with suilicient force, it will flex theresilient supporting member between the ribs 24 and at the same timegive a bodily movement to the left-hand arm 23 to cause it to movebodily with reference to the left-hand fixed pin or screw 21 and willimpart a slight angular motion to the other arm 23. If, on the otherhand, the rigl'it-hand end bar shown in Fig. 2 strikes the type rest,the blow will tend to produce a corresponding flexing of the curvedportion or support between the ribs, and a bodily movement of theright-hand arm 23 and a slight angular motion of the other arm. If acenter type bar should strike the pad there would be a tendency to flexthe support next to both of the arms 23 and between the ribs and toimpart to both of the arms 28 angular movements on their supportingmeans. The action of the type rest will therefore differ under varyingcircumstances; but in any case there is a tendency of the resilientsupport to yield to the force acting on the rest. Moreover, it will beunderstood that when a type bar striking the rest tends to change thecurvature of the resilient support, the type bars, or some of the typebars, at rest on the pad will either resist the tendency of the strikingbar to change the curvature of the support, or else will follow theyielding part and will resist its quick restoration or sudden reactionto the normal position, so that the shock of the bar is absorbed, thereaction of the resilient support being thus rendered too gentle orsluggish to effect a rebound of the bar. I prefer to form the rest withribs 24 to prevent the stri 24 from springing where it is stiffened bythem. Two ribs are shown in the present instance, one on each side ofthe center of the stri 24. These ribs extend longitudinally o the stripand each preferably tapers from the center of the rib to the endsthereof. When the strip 24 is thus stiffened, a blow from a type barimparts to it, or to a portion or portions of it, a slight e-ndwisemovement, and both this movement and the reacting movement of the stripare naturally arrested by the friction between the rest and some or allof the inactive type bars, the reaction being such that apparentlyneither does the actuated type bar rebound, nor does any of the otherbars jump from the rest. I preferably make the rest from a stock whichhas just the pro-per resiliency and is of such weight that the forcerequired to move the rest mounted as it is, instantly from its normalposition, substantially equals the force of the blow of a type bar as itstrikes the rest, so that the type rest itself will move when itreceives a blow from a type bar instead of causing the type bar torebound therefrom. The type bar is therefore suddenly arrested, the typerest absorbing all of the energy of the bar and moving slightly Igrom itand not causing a rebound of the It will be seen that the heads of thescrews or pins 21 overlap the looped ends 22 of the resilient support22-2324 so as to prevent the resilient support from being removed fromthe pins, but affording a free play and bodily movement of the resilientsupport on the pins in the direction of the lengths of the arms 23, theslots 22 extending in the direction of the lengths of said arms.

From the foregoing description it will be understood that the resilientsupport 22- 2324 is in fact a bowed leaf spring loosely supported at itsends by the pin and slot connections 2122 between the fixed support 19and the resilient support; that the type rest is resiliently supportedas well as movable on its support at each end and may be termed afloating type rest; that the type rest is held in the normal position byits own inherent resiliency; and that the arms 23 constitute terminalbends in the spring sheet metal supporting strip.

While I have referred herein to the pins 21 and support 19 as beingfixed it should be understood that this expression means relativelyfixed or so fixed that these parts will not be disturbed b the movementimparted to the type rest y the impact of the type bars. The parts 19and 21 when employed in the Monarch machine are, as hereinbeforeexplained, connected to and moved with the type bar segment in the caseshifting movements of the latter.

The various features of the construction pointed out above allcontribute to the production of an efficient type rest, to prevent therebound of the type barsthus the provision of a floating type rest, of aresilient type rest which will move or yield in the general direction ofthe movement of the bar as it is restored to normal position, theconstruction by which the type bars at rest in the basket are madeeffective to prevent the too sudden reaction of the resilient rest, andthe regulation of the weight of the movable type rest itself withrespect to the force of the blow which it receives from each individualtype bar, all contribute to the efficiency of the type rest, but itshould be understood that any one or more of these features may be usedwithout the others and that my invention is not restricted to theembodiment of all of these features in the same structure and thatvarious changes may be made without departing from my invention.

While I have found in practice that the type rest provided with the ribs24 is especially eflicient and is particularly adapted to preventinactive side bars from dancing when other bars strike the rest,nevertheless a rest without these ribs but otherwise constructed asshown and described constitutes a highly eflicient anti-rebound typerest. When I refer herein to a leaf spring I employ such a term merelyto distinguish the spring from a coiled or convolute spring.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, a type rest comprising a leaf springloosely supported at its ends, and a pad supported by sa1d leaf spring.

2. In a typewriting machine, the combination of a series of segmentallyarranged upwardly and rearwardly striking type bars, and an uprightsegmental type rest which supports said type bars, the type rest beingmounted on its support for bodily movement at each end from its normalposition and being connected only at its ends to the support.

3. In a typewriting machine, a type rest comprising a piece of resilientsheet metal mounted for movement on its support at each end, from itsnormal position, and held in the normal position by its own inherentresiliency, and a facing of pliant material.

4. In a typewriting machine, a segmental type rest supported near itsends only and resilient throughout at least a portion of its len th andcapable of fiexure between the ends thereof and mounted for bodilymovement at each end from its normal position.

5. In a typewriting machine, the combination of a relatively fixedsupport, and a resilient type bar support loosely mounted for bodilymovement on said fixed support, the resiliency of said type bar supportmaintaining it in the normal position on said fixed support.

6. In a typewriting machine, a type rest comprising a spring supportin-strip bent to conform to the curvature of tile type bars which itsupports and having terminal bends, each of which extends at an an le tothe body portion of said strip, each 0 said terminal bendsbeing looselysupported for bodily movement, and a pad supported by said springsupporting strip.

7. In a typewriting machine, a type rest comprising a verticallydisposed spring supporting strip bent to conform to the curvature of thetype bars which it supports and having terminal bends each of whichextends at an angle to the body portion of said strip, each of saidterminal bends being loosely supported for bodily movement, and a padsupported by said spring supporting strip, the inherent spring of thesupporting strip being effective to restore the rest to its elevated ornormal position.

8. In a typewriting machine, a type rest comprising a loosely supportedbowed leaf spring adapted to exert a pressure which tends to elevate thetype rest to its normal position after a blow is imparted thereto by atype bar.

9. In a typewriting machine, a type restcomprising a bowed supportingspring adapted to exert a pressure which tends to restore the spring toits original contour after a blow is imparted thereto by a type bar, andmeans for loosely supporting the spring at the ends thereof.

10. In a typewriting machine, a type bar rest compris ng a bowedsupporting spring, a fixed support, pin and slot connections between theends of said spring and said fixed support, and a pad supported by saidspring.

11. In a typewriting machine, a type bar rest comprising a bowed springcurved to correspond substantially to the curvature of the series oftype bars wh ch it is to support, said spring having arms that extendfrom the curved portion thereof, a pad supported by said spring, a fixedsupport, and pin and slot connections between said fixed support-andsaid arms, the slots extending lengthwise of said arms.

12. In a typewriting machine, a type bar rest comprising a verticallydisposed bowed leaf spring curved to open upwardly, the curvature of thespring conforming substantially to the curvature of the series of typebars which the spring is to support, integral spring arms formed on saidspring and extending from the ends of the curved portion thereof, thefree ends of the arms being formed with elongated loops, a fixed supportcarrying pins that are received With n said loops, and a pad supportedby said spring.

13. In a typewriting machine, a type rest comprising a thin fiat stripof resilient material having an arc-shaped portion conforming to thesystem of type bars, a support for said strip, and yielding connectionsbetween the strip and support, the said yielding connections being thesole support for said strip.

14. In a typewriting machine, a type rest comprising a thin flat stripof resilient material having an arc-shaped portion and arms extendingtherefrom, a support for said strip, and yielding connections betweensaid arms and support, the said yielding connections being the solesupport for said strip.

15. In a typewriting machine, a type rest comprising a thin flat stripof resilient. material having an arc-shaped portion conforming to thesystem of type bars, a support for said strip, and yielding connectionsbetween the strip and support, said connections including pins on whoseaxes parts of the strip are movable angularly, the said yieldingconnections being the sole support for said strip.

16. In a typewriting machine, a type rest comprising a thin flat stripof resilient material having an arc-shaped portion conforming to thesystem of type bars, a support for said strip, and yielding connectionsbetween the strip and support, said connections including pins anddevices extending from the ends of the are to said pins, and the ends ofthe are being movable angularly on the axes of the pins, the saidyielding connections being the sole support for said strip.

17. In a typewriting machine, a type rest (IOI'I'IPIlSlIlg a thin flatstrip of resilient material having an arc-shaped portion conforming tothe system of type bars, a support for said strip, and yieldingconnections between the strip and support, said connectit-ns includingpins toward and from which portions of the strip are movable and onwhose axes said portions of the strip are movable angularly, the saidyielding connections being the sole support for said strip.

18. In a typewriting machine, a type rest comprising a thin strip ofresilient material having a ribbed arc-shaped portion conforming to thesystem of type bars, a support for said strip, and yielding connectionsbetween the strip and support.

19. In a typewriting machine, a type rest comprising a thin strip ofresilient material having an arc-shaped portion conforming to the systemof type bars, a support for said strip, and yielding connections betweenthe strip and support, said arc-shaped portion having ribs formedthereon, these ribs being between the middle and ends of the arc andextending lengthwise of the are.

9.0. In a typewriting machine, a type rest comprising a thin strip ofresilient material having an arc-shaped portion conforming to the systemof type bars, a support for said strip, and yielding connections betweenthe strip and support, said arc-shaped portion being stiffer between themiddle and ends of the are than it is at the middle and ends of the are.

21. In a typewriting machine, a type rest comprising a thin strip ofresilient material having an arc-shaped portion conforming to the systemof type bars, a support for said strip, and yielding connections betweenthe strip and support, said arc-shaped portion being stiffer between themiddle and ends of the arc than it is at the middle and ends of the arc,and said connections including pins on whose axes parts of the stop aremovable angularly.

22. In a typewriting machine, a type rest comprising a thin strip ofresilient material having an arc-shaped portion conforming to the systemof type bars, a support for said strip, and yielding connections betweenthe strip and sup ort, said areshaped portion being sti or between themiddle and ends of the arc than it is at the middle and ends of the are,and said connections including pins and devices extending from the endsof the are to said pins and the ends of the are being movable angularlyon the axes of the pins.

93. In a typewriting machine, a type rest comprising a thin stri ofresilient material having an arc-shape ortion conforming to the systemof type bars, a support for said strip, and yielding oonnections betweenthe strip and support, said arc-shaped portion being stiffer between themiddle and ends of the arc than it is at the middle and ends of the arc,and said connections including pins toward and from which portionsOnondaga and State of New York this 30th 15 day of August A. D. 1909.

JOHN W. KOERNER. Witnesses:

H. H. STEELE, GILES B. EvERsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

